<?php

$array = array(1, 2, 3, 4);
array_walk($array, create_function('$value', 'echo $value'));


exit;

//如果用户未登录，即未设置$_SESSION['user_id']时，执行以下代码
if(!isset($_SESSION['user_id'])){
    if(isset($_POST['submit'])){//用户提交登录表单时执行如下代码
        $dbc = mysqli_connect(DB_HOST,DB_USER,DB_PASSWORD,DB_NAME);
        $user_username = mysqli_real_escape_string($dbc,trim($_POST['username']));
        $user_password = mysqli_real_escape_string($dbc,trim($_POST['password']));
        if(!empty($user_username)&&!empty($user_password)){
            //MySql中的SHA()函数用于对字符串进行单向加密
            $query = "SELECT user_id, username FROM mismatch_user WHERE username = '$user_username' AND "."password = SHA('$user_password')";
            //用用户名和密码进行查询
            $data = mysqli_query($dbc,$query);
            //若查到的记录正好为一条，则设置SESSION，同时进行页面重定向
            if(mysqli_num_rows($data)==1){
                $row = mysqli_fetch_array($data);
                $_SESSION['user_id']=$row['user_id'];
                $_SESSION['username']=$row['username'];
                $home_url = 'loged.php';
                header('Location: '.$home_url);
            }else{//若查到的记录不对，则设置错误信息
                $error_msg = 'Sorry, you must enter a valid username and password to log in.';
            }
        }else{
            $error_msg = 'Sorry, you must enter a valid username and password to log in.';
        }
    }
}else{//如果用户已经登录，则直接跳转到已经登录页面
    $home_url = 'loged.php';
    header('Location: '.$home_url);
}
?>
    <html>
    <head>
        <title>Mismatch - Log In</title>
        <link rel="stylesheet" type="text/css" href="style.css" />
    </head>
    <body>
    <h3>Msimatch - Log In</h3>
    <!--通过$_SESSION['user_id']进行判断，如果用户未登录，则显示登录表单，让用户输入用户名和密码-->
    <?php
    if(!isset($_SESSION['user_id'])){
        echo '<p class="error">'.$error_msg.'</p>';
        ?>
        <!-- $_SERVER['PHP_SELF']代表用户提交表单时，调用自身php文件 -->
        <form method = "post" action="<?php echo $_SERVER['PHP_SELF'];?>">
            <fieldset>
                <legend>Log In</legend>
                <label for="username">Username:</label>
                <!-- 如果用户已输过用户名，则回显用户名 -->
                <input type="text" id="username" name="username"
                       value="<?php if(!empty($user_username)) echo $user_username; ?>" />
                <br/>
                <label for="password">Password:</label>
                <input type="password" id="password" name="password"/>
            </fieldset>
            <input type="submit" value="Log In" name="submit"/>
        </form>
        <?php
    }
    ?>
    </body>
    </html>

    3、登入页面：loged.php
    代码如下	复制代码

<?php
//使用会话内存储的变量值之前必须先开启会话
session_start();
//使用一个会话变量检查登录状态
if(isset($_SESSION['username'])){
    echo 'You are Logged as '.$_SESSION['username'].'<br/>';
    //点击“Log Out”,则转到logOut页面进行注销
    echo '<a href="logOut.php"> Log Out('.$_SESSION['username'].')</a>';
}
/**在已登录页面中，可以利用用户的session如$_SESSION['username']、
 * $_SESSION['user_id']对数据库进行查询，可以做好多好多事情*/
?>
    4、注销session页面：logOut.php(注销后重定向到lonIn.php)
    代码如下	复制代码
<?php
//即使是注销时，也必须首先开始会话才能访问会话变量
session_start();
//使用一个会话变量检查登录状态
if(isset($_SESSION['user_id'])){
    //要清除会话变量，将$_SESSION超级全局变量设置为一个空数组
    $_SESSION = array();
    //如果存在一个会话cookie，通过将到期时间设置为之前1个小时从而将其删除
    if(isset($_COOKIE[session_name()])){
        setcookie(session_name(),'',time()-3600);
    }
    //使用内置session_destroy()函数调用撤销会话
    session_destroy();
}
//location首部使浏览器重定向到另一个页面
$home_url = 'logIn.php';
header('Location:'.$home_url);
/**
 * This file is test of 3k-sdk 
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the MIT-LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @author lane<61647649@qq.com>
 * @copyright lane<61647649@qq.com>
 * @link http://www.3k.com
 * @license http://www.opensource.org/licenses/mit-license.php MIT License
 */
define('APP_NAME', 'api');
require "../core/init.php";
 

$table_name = _get_split_table('13631375979', 'login');
echo "$table_name\n";

function _get_split_table($item_value, $table)
{
    /*{{{*/
    switch ($table)
    {
    case 'user_assign' :
        return 'kkk5_user_assign';
        break;
    case 'old_id' :
        return 'kkk5_old_id';
        break;
    case 'login' :
        // item_value = account
        $item_value = sha1(strtolower($item_value));
        $item_value = str_pad(base_convert(substr($item_value, -2), 16, 10) % 128, 3, "0", STR_PAD_LEFT);
        return 'kkk5_login_' . $item_value;
        break;
    case 'user_details' :
        // item_value = user_id
        $item_value = str_pad(substr($item_value, -2), 2, "0", STR_PAD_LEFT);
        return 'kkk5_user_details_' . $item_value;
        break;
    case 'user' :
        // item_value = user_id
        $item_value = str_pad(substr($item_value, -2), 2, "0", STR_PAD_LEFT);
        return 'kkk5_user_' . $item_value;
        break;
    default :
        echo "<pre>";
        echo "Table not exist\n";
        exit();
        break;
    }/*}}}*/
}

